Hamstrings Athletes who had suffered hamstring injuries were randomly assigned to one of
Chapter 12, Problem 31(choose chapter or problem)
Hamstrings Athletes who had suffered hamstring injuries were randomly assigned to one of two exercise programs. Those who engaged in static stretching returned to sports activity in a mean of 15.2 days faster than those assigned to a program of agility and trunk stabilization exercises. (Journal of Orthopaedic & Sports Physical Therapy 34 [March 2004]: 3) a) Explain why it was important to assign the athletes to the two different treatments randomly. b) There was no control group consisting of athletes who did not participate in a special exercise program. Explain the advantage of including such a group. c) How might blinding have been used? d) One group returned to sports activity in a mean of 37.4 days 1SD = 27.6 days2 and the other in a mean of 22.2 days 1SD = 8.3 days2. Do you think this difference is statistically significant? Explain.
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